Tietoverkko

input/code.cpp: In function 'int main()':
input/code.cpp:41:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < tt.size(); i++)
                   ^

#include<bits/stdc++.h>
using namespace std;
int t[101][101];
bool z[101010];
int n;
int f = 0;
void haku(int s)
{
	if(z[s] == 1) return;
	z[s] = 1;
	f++;
//	cout << "S: " << s << " ++" << "\n";
	for(int i = 1; i < 101; i++)
	{
		if(t[s][i] == 1)
		{
			haku(i);
		}
	}
}
int main()
{
	cin >> n;
	int need = 0;
	for(int i = 0; i < 1000; i++) z[i] = 0;
	for(int i = 0; i < 101; i++)
	{
		for(int i2 = 0; i2 < 101; i2++)
		{
			t[i][i2] = 0;
		}
	}
	vector<pair<int, int> > tt;
	for(int i = 0; i < n; i++)
	{
		int x, y; cin >> x >> y;;
		t[x][y] = 1;
		t[y][x] = 1;
		tt.push_back(make_pair(x,y));
	}
	for(int i = 0; i < tt.size(); i++)
	{
		for(int i = 0; i < 1000; i++) z[i] = 0;
		int t1 = tt[i].first; int t2 = tt[i].second;
		t[t1][t2] = 0;
		t[t2][t1] = 0;
		f = 0;
		haku(1);
		t[t1][t2] = 1;
		t[t2][t1] = 1;
//		cout << f << "\n";
		if(f < n) need++;
	}
	cout << need << "\n";

}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: RUNTIME ERROR

Test 7

Group: 2

Verdict: RUNTIME ERROR

Test 8

Group: 2

Verdict: RUNTIME ERROR

Test 9

Group: 2

Verdict: RUNTIME ERROR

Test 10

Group: 2

Verdict: RUNTIME ERROR